MSI has a new pico-ITX motherboard with an integrated Intel Atom N230 1.6GHz processor:
This compact motherboard has a hardwired Intel Atom N230 processor clocked at 1.60 GHz that is passively cooled by an aluminum heatsink, it shares this heatsink with a Intel 945GC northbridge that's the core-logic used accompnied with a ICH7 southbridge. It features an integrated Intel Graphics Media Accelerator 950 and Realtek ALC 888HD audio.
While the board doesn't feature an onboard PSU unlike the offering from VIA, it features two DDR2 slots for DDR2 667/533 MHz, two SATA II ports, an IDE connector, ports arranged in the standard ATX fashion. A PCI slot is provided. The board features onboard ethernet along with 6-channel audio.
This tiny 19cm x 17cm motherboard is already selling in Japan for approx. $95.